A stream is never only a wet, cold liquid rushing in one direction. A river is never easy to cross.
Nothing stays forever in this world, everything is in constant flux. A change is something that allows us to function, to live, to breath in piece.
What happens when we cross a river? Is it a cleansing experience? Are we renewed? Our sins washed, our troubles pulled off us?
A baptism of water. A purification of heart and soul.